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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,222 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io" | ||
| "log/slog" | ||
| "os" | ||
| "time" | ||
|
|
||
| "github.com/ethereum/go-ethereum/crypto" | ||
| "github.com/primevprotocol/mev-commit/pkg/node" | ||
| "github.com/urfave/cli/v2" | ||
| "gopkg.in/yaml.v2" | ||
| ) | ||
|
|
||
| const ( | ||
| defaultP2PPort = 13522 | ||
| defaultHTTPPort = 13523 | ||
| ) | ||
|
|
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| var ( | ||
| optionConfig = &cli.StringFlag{ | ||
| Name: "config", | ||
| Usage: "path to config file", | ||
| Required: true, | ||
| EnvVars: []string{"MEV_COMMIT_CONFIG"}, | ||
| } | ||
| ) | ||
|
|
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| func main() { | ||
| app := &cli.App{ | ||
| Name: "mev-commit", | ||
| Usage: "Entry point for mev-commit", | ||
| Commands: []*cli.Command{ | ||
| { | ||
| Name: "start", | ||
| Usage: "Start mev-commit", | ||
| Flags: []cli.Flag{ | ||
| optionConfig, | ||
| }, | ||
| Action: func(c *cli.Context) error { | ||
| return start(c) | ||
| }, | ||
| }, | ||
| { | ||
| Name: "create-key", | ||
| Action: func(c *cli.Context) error { | ||
| return createKey(c) | ||
| }, | ||
| }, | ||
| }} | ||
|
|
||
| if err := app.Run(os.Args); err != nil { | ||
| fmt.Fprintf(app.Writer, "exited with error: %v\n", err) | ||
| } | ||
| } | ||
|
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| func createKey(c *cli.Context) error { | ||
| privKey, err := crypto.GenerateKey() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| if len(c.Args().Slice()) != 1 { | ||
| return fmt.Errorf("usage: mev-commit create-key <output_file>") | ||
| } | ||
|
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| outputFile := c.Args().Slice()[0] | ||
|
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| f, err := os.Create(outputFile) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| defer f.Close() | ||
|
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| if err := crypto.SaveECDSA(outputFile, privKey); err != nil { | ||
| return err | ||
| } | ||
|
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| fmt.Fprintf(c.App.Writer, "Private key saved to file: %s\n", outputFile) | ||
| return nil | ||
| } | ||
|
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| type config struct { | ||
| PrivKeyFile string `yaml:"priv_key_file" json:"priv_key_file"` | ||
| Secret string `yaml:"secret" json:"secret"` | ||
| PeerType string `yaml:"peer_type" json:"peer_type"` | ||
| P2PPort int `yaml:"p2p_port" json:"p2p_port"` | ||
| HTTPPort int `yaml:"http_port" json:"http_port"` | ||
| LogFmt string `yaml:"log_fmt" json:"log_fmt"` | ||
| LogLevel string `yaml:"log_level" json:"log_level"` | ||
| Bootnodes []string `yaml:"bootnodes" json:"bootnodes"` | ||
| } | ||
|
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| func checkConfig(cfg *config) error { | ||
| if cfg.PrivKeyFile == "" { | ||
| return fmt.Errorf("priv_key_file is required") | ||
| } | ||
|
|
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| if cfg.Secret == "" { | ||
| return fmt.Errorf("secret is required") | ||
| } | ||
|
|
||
| if cfg.PeerType == "" { | ||
| return fmt.Errorf("peer_type is required") | ||
| } | ||
|
|
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| if cfg.P2PPort == 0 { | ||
| cfg.P2PPort = defaultP2PPort | ||
| } | ||
|
|
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| if cfg.HTTPPort == 0 { | ||
| cfg.HTTPPort = defaultHTTPPort | ||
| } | ||
|
|
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| if cfg.LogFmt == "" { | ||
| cfg.LogFmt = "text" | ||
| } | ||
|
|
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| if cfg.LogLevel == "" { | ||
| cfg.LogLevel = "info" | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| func start(c *cli.Context) error { | ||
| configFile := c.String(optionConfig.Name) | ||
| fmt.Fprintf(c.App.Writer, "starting mev-commit with config file: %s\n", configFile) | ||
|
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| var cfg config | ||
| buf, err := os.ReadFile(configFile) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to read config file at '%s': %w", configFile, err) | ||
| } | ||
|
|
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| if err := yaml.Unmarshal(buf, &cfg); err != nil { | ||
| return fmt.Errorf("failed to unmarshal config file at '%s': %w", configFile, err) | ||
| } | ||
|
|
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| if err := checkConfig(&cfg); err != nil { | ||
| return fmt.Errorf("invalid config file at '%s': %w", configFile, err) | ||
| } | ||
|
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| logger, err := newLogger(cfg.LogLevel, cfg.LogFmt, c.App.Writer) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to create logger: %w", err) | ||
| } | ||
|
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| privKey, err := crypto.LoadECDSA(cfg.PrivKeyFile) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to load private key from file '%s': %w", cfg.PrivKeyFile, err) | ||
| } | ||
|
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| nd, err := node.NewNode(&node.Options{ | ||
| PrivKey: privKey, | ||
| Secret: cfg.Secret, | ||
| PeerType: cfg.PeerType, | ||
| P2PPort: cfg.P2PPort, | ||
| HTTPPort: cfg.HTTPPort, | ||
| Logger: logger, | ||
| Bootnodes: cfg.Bootnodes, | ||
| }) | ||
| if err != nil { | ||
| return fmt.Errorf("failed starting node: %w", err) | ||
| } | ||
|
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| <-c.Done() | ||
| fmt.Fprintf(c.App.Writer, "shutting down...\n") | ||
| closed := make(chan struct{}) | ||
|
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| go func() { | ||
| defer close(closed) | ||
|
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| err := nd.Close() | ||
| if err != nil { | ||
| logger.Error("failed to close node", "error", err) | ||
| } | ||
| }() | ||
|
|
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| select { | ||
| case <-closed: | ||
| case <-time.After(5 * time.Second): | ||
| logger.Error("failed to close node in time") | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| func newLogger(lvl, logFmt string, sink io.Writer) (*slog.Logger, error) { | ||
| var ( | ||
| level = new(slog.LevelVar) // Info by default | ||
| handler slog.Handler | ||
| ) | ||
|
|
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| switch lvl { | ||
| case "debug": | ||
| level.Set(slog.LevelDebug) | ||
| case "info": | ||
| level.Set(slog.LevelInfo) | ||
| case "warn": | ||
| level.Set(slog.LevelWarn) | ||
| case "error": | ||
| level.Set(slog.LevelError) | ||
| default: | ||
| return nil, fmt.Errorf("invalid log level: %s", lvl) | ||
| } | ||
|
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| switch logFmt { | ||
| case "text": | ||
| handler = slog.NewTextHandler(sink, &slog.HandlerOptions{Level: level}) | ||
| case "none": | ||
| fallthrough | ||
| case "json": | ||
| handler = slog.NewJSONHandler(sink, &slog.HandlerOptions{Level: level}) | ||
| default: | ||
| return nil, fmt.Errorf("invalid log format: %s", logFmt) | ||
| } | ||
|
|
||
| return slog.New(handler), nil | ||
| } |
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